Showing Off, For bravado, or for women (or both for that matter). posturing, or attempting to be the "alpha male"...
See:
flossin, floss, flexin', etc...
On the other hand, people having roots in Mexico, are currently being oppressed by the descendants of Immigrants from Europe.
The only Non-Immigrant Americans are the Native Americans. Even if you were born in the USA you are still a descendant of Immigrants, therefore you would be in the same situation as a black person born and raised in Germany or Iceland. You would still be a German or a Icelandic, yet a descendant of Immigrants.
The big difference is that Immigrants to the USA, Germany and Iceland DO NOT GENOCIDE the Natives.
Old Navy clothing stores. Old Navy is highly frequented by Mexican Americans due to the lower prices and relatively fashionable clothes. Do not even consider going to an Old Navy in the SW United States during any clearance sales lest you wait 4 hours to check out. You can also tell a Mexican Gap by how disorderly the clothes are arranged 30 minutes after opening, because Mexicans consider it a big flea-market where they can throw clothes on the floor they don't intend to purchase.
Friend #1: "Hey lets hit up The Mexican Gap. They have $1 flip flops this weekend."
Friend #2: "Are you crazy?! It'll be one-in-one-out because of all the Mexicans! How about we wait until next weekend, pay a little extra, and save ourselves getting stabbed by some Mexican?"
Friend#1: "Word. Or we could go to actual Gap today. There shouldn't be any there."
Friend #2: "Truth."